does anyone here do it? and how does one start out to gain strength to do so? I wanna be able to do muscle ups and shit

squat bench and deadlift

Yokes, sled pulls, farmers walks, log press

lift rice bag

good-mornings, how-do-ya-dos, ball-round-the-belly, facepulls

Lol

Lol no.

Actually doing calisthenics will make you stronger at calisthenics.

OP there are plenty of bar routines on YouTube and Google.

Madbarz.com got moved to somewhere. Google it and it will redirect you to whatever the new site is. Might be the same address. They have bar routines.

The Fortress and I think bar brothers are also good YouTube channels.

Don't get discouraged with 5 rep sets if that's where you're at just stick to it. When you can get a full workout in because you can no longer do body weight reps, move on to weighted exercises (like if you can't do a pull up, do lat pull downs of bicep curls etc etc)

Have fun with it!

Frank Medrano is the king

All day...barstarz